Re: How can I constrain publicly available schemas?

<Quote>
for instance one of the immediate children the CustomerDetails element
can be either OrganisationInfo or PersonInfo. My system, however, only
wants to process PersonInfo elements and never OrganisationInfo so, do I
-
</Quote>

According to your explanation, there's no issue because there is a
choice (that is, an xs:choice) in the schema of using OrganisationInfo
or PersonInfo - so if your XML documents always have PersonInfo elements
and never OrganisationInfo elements, they should conform to the schema
in that regard.

Kind Regards,
Joseph Chiusano
Booz Allen Hamilton
Visit us online@ http://www.boozallen.com
 

  

-----Original Message-----
From: Fraser Crichton [mailto:fraser.crichton@s...] 
Sent: Sunday, April 03, 2005 6:56 PM
To: xml-dev@l...
Subject:  How can I constrain publicly available schemas?

Hi,

I'm working on an application where I need to use subsets of 
publicly available schemas.

For instance, to model contacts information I'm using xCIL 
however xCIL has a very large range of formats, for instance 
one of the immediate children the CustomerDetails element can 
be either OrganisationInfo or PersonInfo. My system, however, 
only wants to process PersonInfo elements and never 
OrganisationInfo so, do I -

a) create a more specific schema using the xCIL namespace (!) 
(if so, should I then validate it twice - once against xCIL 
and then against my more specific schema)

b) XML.com has this article - Designing a New Schema with XML 
Design Patterns - 
http://www.xml.com/pub/a/2003/06/04/patterns.html - which 
would seem to suggest selectively reusing types and global 
elements from other namespaces, are there any problems with 
this approach?

c) is the schema just a contract and I should use something 
else again for validation?

Is this a dumb question or has anybody else come across this 
issue and if so how have they approached it?

Cheers,

Fraser


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